Question How does Framing Transposer work with Composer?

Hi, I have a question about the use of Framing Transposer with Composer. In the documentary, it says that Framing Transposer only changes the camera's location in space while Composer only changes the camera's orientation, and Framing Transposer is applied after Composer.

So my question is,if the camera has already oriented to the LookAt target (say it is at the centre of the screen) and we are going to offset the camera so that the Follow target can be correctly positioned on the screen, won't the LookAt position on the screen also be changed when the camera's location is changed?

For example, my Composer ScreenX = Composer ScreenY = 0.5, and the LookAt point is right now at screen centre. Besides, I set my FT Screen X = 0 & FT ScreenY = 0.5, but the Follow point, for instance, is now also placed at screen centre, so the camera needs to move right at its local coordianate. When we do so, the LookAt point will no more be at the centre of the screen, as FT only changes the camera's location (if I am right).

 

I got it! Thanks, Gregoryl!